Printing-telegraph mechanism.



o. L. lKLEBER. PRINTING TELE'GRAPH MECHANISM. APPLICAUN HLED1uNE8.1914.

1,145,490, 'I Patenged July 6, 1915.

' WITNESSES: NVENTO? 0.560', r l( @6er OSCAR L. KLEIBER, 0F PITTSBURGH, PENNSYLVANIA.

PRINTING-TELEGRAPH MECHANISM.

y to the desired printing position, return it to ythe normal 'position after the printing operation has been effected, and in which the electric. impulses' that control and set into action the said electromechanical devices are sent out from the transmission end of the system.

lMy present invention specifically has reference to improvements in the printing tele graph system disclosed in my copending application No. 616,740, filed March 24, 1913, and especially With reference to the means for causing the type wheel to rotate with the continuously rotating motor actuated shaft, which-in my system above referredto is arranged for being set in operation by the operator at the transmitterrend of the system when he desires to send in the message. In my aforesaid copending application, the type wheel or wheels are held to turn with the shaft at the desired times by means of a spring disk mounted on and which turns with the shaft, and which is held up against the side of the wheel under pressure by a tension spring.

From practical experience it has developed that the spring pressure against the wheel is of such an extent that it tends to w'ear the operating gear, etc., besides putting so much pressure on the dot or releasing finger as to necessitate a strong pull of the magnet that cooperates With the said nger to draw it away from the wheel face and its stop portion, requiring, as it were, a strong current for effectively and at proper timing release the said Enger. For the same reason, a strong motor isrequired to turn the type wheel shaft against the frictional resistance applied by the springs.

The primary purpose of my present invention is theA provision of an improved means for controlling therotation' of and the connection of the Wheel and the shaft that remedies vall of the obiections noted,

Specification of Letters Patent.

-or stop finger. l

ratenteaauiy e, 1915;

Application led J une 8, 1914. Serial No. 843,744.

and which materially simplilies the con,

struction ofthe typewheel controlling mechanism and the type wheel setting andfrel,

leasing operations rendered 'the more positive `and absolutely certain with respect to the proper setting of the wheel. i

Another and important object of my present invention is to provide an improved means for carrying around the type wheel with the shaft in such manner that the con- I tinuous heavy friction incident in the use of the means for locking the Wheel with the shaft shown in my copending application is not only entirely avoided,but the rotating pull force is doubled and arranged to act only when the type Wheel is entirely free from the hold-back action of the arresting A With other objects in view, all of .which Will be hereinafter explained, my present invention, in its generic nature, lcomprehends an electromagnet rotatable .with the actuating shaft that is so located and held for 'cooperating with the type wheel that when energized it electrically grips the wheel and causes it to turn with the shaft until the magnet is denergized, the latter operation in my present construction being entirely under the control of the dot finger which in its swinging movements controls a switch which in turn controls the current from the battery or other electric source to the magnet.

In its more subordinate feature, my prescnt invention embodies 'certain details of construction and novel arrangement of parts, all of which will be hereinafter fully explained, specifically pointed out in the appended claims and illustrated in the accompanying drawings, in which:

Figure lisa diagrammatic perspective showing the general arrangement of my im` proved type wheel control mechanism. Fig. 2 is a diagrammatic plan view showing the shifting switch in'its various positions, parts of the complete device being omitted. Fig. V3

isa longitudinal section showing the magnet construction. WF 1g. 4 is a sectlon on the lme lf-4 of F ig. 3. y My improvements, as before, stated, have reference to the means for clutching or interlocking the type wheel to cause it to rotatewith the rotary shaft onwhich'it'is mount'- ed, and in the practical application of l:my

said present improvements to the printing telegraph system or mechanism shown and ini-amenit operation, and the advantages of my inven- Y tion will' be readily understood.

Byreason of the utilization of magnetic clutch device, that is under control of the 'operator at the transmitting end of the system, a simple, effective and positively acting means is provided for controlling the connection. of the type or' printing wheel with the actuating shaft.

An essential advantage in my improved structure is that at .no time is there heavy Work for the machine, the main line, the local battery Aor the motor, since the type wheel magnet pulls the type wheel into a clutched engagement with the rotating shaft only when it (the type wheel) 4isfree to rotate with the shaft. Furthermore, in my present construction when the type wheel vis held at rest, it being loosely mounted on the rotating shaft, though the latter is continuously revolving, there is practically no friction to overcome because the shaft magnet being normally not energized, produces no pull on the armature disk on the wheel,I

and in consequence has no eect Whatever on the said wheel.

What I claim is:

1. In a printing telegraph of the character stated; a continuously rotatable shaft, an

electromagneticl clutching element carried thereby, a type wheel loosely mounted on the shaft, means governed by the duration of a transmitted character impulse for energizing the said clutching element to couple the shaft and the type wheel together throughout the duration of the said impulse.

2. In a printing telegraph in which' is included a lcontinuously rotatable actuating shaft and a type wheel loosely mounted thereon; a magnetic clutch device that cooperates with the Vshaft and the Wheel that couples the said Wheel and shaft to cause the wheel to rotate with the shaft during each character transmitted electric impulse, and means controlled by said transmitted impulses for energizing the said magnetic clutch for the purposes stated.

3. In a printing telegraph in which is included a rotatable shaft and type wheel, electromechanical devices for holding the wheel to its predetermined positions during the operation oit` setting the wheel to a selected position; of means that cooperate with the Wheel and the shaft that operates to clutch the wheel to the shaft under each transmitted character impulse that controls the setting of the wheel and the wheel selecting devices, and which releases the said wheel when the said electric impulses cease.y

4 ln a. printing telegraph, in which is included a rotatable shaft and a type wheel loosely mounted thereon, electromechanical devices including a stop finger for `holding the wheel to predetermined positions during the operation of setting the wheel to a, selected'position; a magnetic clutch in whichv is included an armature member on the Wheel, means for energizing the clutch set into action under each transmitted character impulse, said means including a source .of electrical energy, a switch for `opening and closing the source of energy, and con-l nections that lmin the linger andthe switch -thatcontrols the source 4of electrical energy for the magnetic clutch. l

5. ln a printing telegraph, a continuously rotating operating shaft, a type wheel mounted thereon, electromechanical devices for holding the Wheel from turning, said devices being under control of and set into action during the time in which the transmitted impulses for building up the desired character are active, an electric magnet mounted on the shaft to turn therewith and which includes a disk on the type wheel that formsthe armature, source of local elec-l trical energy for the magnet, a switch that controls the said source of energy, connections that join the switch with the electromechanical devices that etect the stoppage of the machine and adapted to be shifted as the said devices are energized and -dener gized to shift the switch to energize or de- 'energize the electromagnet to couple or re lease the wheel and the shaft.

6. In a printing telegraph system of the character stated, a continuously rotative shaft, a printing wheel loosely mounted on the shaft, stop nger devices that engage and hold the Wheel andare released from the wheel under electric impulses from the transmitting line, a magnetic clutch mounted upon and rotatable with the shaft and adapted when energized to clutch the printing wheel to turn with the shaft, a source of electrical energy for the clutch, a controlling switch for the said energy and connections that join the switch and the stop linger devices for shifting the said switch.

7. -In a printing telegraph of the character stated, a continuously rotative shaft, an electromagnetic clutching element carried thereby, a type wheel loosely mounted upon the shaft, means governed by the duration of a transmitted character impulse yfor energizing the said clutching element to couple the .shaft and the type wheel together throughv a transmitted character forl restoring the printing Wheel vto its initial position.

8. In a printing telegraph of the character "stated, a continuously rotative shaft, an elec-- tromagnetic clutching element carried there by, atype Wheel loosely mounted upon the shaft, means governed by the duration/ot a transmitted character impulse `for energizn ing the said clutching element'to couple the shaft and the type `wheel together throughout' the duration oi: the last impulse and mechanism -or .eecting' a further energizetion of the said magnetic clutching element upon the completion oi the transmission oi a transmitted character for restoring the printing Wheel to its initial position, and deN vices controlled by the return movement of the printing Wheel for cutting out the .said further energization of the said magnetic clutching element. y

9, ln a printing telegraph in Which is in eluded a continuously rotative actuating shaft and atype Wheel loosely mounted thereon, a stop inger for holding the Wheel from rotation, and means for moving the said stop finger to release the said Wheel, an velectromagnetic clutching element carried by the shaft, means governed by the duration oi a transmitted impulse for energizing the said clutching element to couple the shaft and the type'wheel throughout the du ration oi the said impulse, and mechanism actuated by the stop finger when moved to release the Wheel .for e'ecting a further energizaticn of the said magnetic clutching element upon the completion of the transmission of a transmitted character to restore the said Wheel to its initial position.

l0. ln a printing telegraph system of the character stated, a' continuously rotative shaft, a printing Wheel loosely mounted upon the said shaft, a stop iinger device that engages `and holds the Wheel from roter tion, and is released from the Wheel under electric impulse from the transmitting line, a magnetic clutch mounted upon and rotatable with the shaft and adapted when energized to clutch the printing Wheel to turn with the shaft, a source of electric energy for the said magnetic clutch, a controlling switch for the said energy, connections that join the switch and the stop linger devices for shifting the said switch, and means operable under transmitted impulses for shiting said finger devices.

OSCAR L. KLEBER.

Viitnesses: Ent/ra Nien, @LIVE E. MGCULLY. 

